Method of closing cans.



No. 868,916. PATENTED OCT. 22. 1907.

V J. DIEGKM'ANN.

METHOD OF CLOSING CANS. APPLICATION FILED N v.1a.19o2.

WITNESSES:

' v BY 7/] ,2 k g-vi W ATTORNEY JOHN DIECQKMANN, OF HOBOKEN, NEW JERSEY.

METHOD OF CI OSING CANS.

No. 868,916. u

Application filed November 18,1902- Serial No. 131,816.

To all whom it may concern.-

Be it known that I, Jorru DIECKMANN, a citizen of the United States, residing in Hoboken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Methods of Closing Cans, of which improvements the following is a specification. v t

This invention relates more particularly to methods of hermeticallysecuring covers to metal cans-containing food (say, cooked and seasoned fish or other food to be preserved); but each of the improvements composing the invention is intended to be secured for all the uses to which it can be applied, with or without modification. I

Commonly a hermetic joint has been formed between the cover and the can by the aid of solder with or without interlocking the margin of the cover with a flange on the can; but it has also been proposed to employ iudia rubber or comment of like nature as a filling between the folds of an interlocked joint. In accordance with the present invention, a varnish resin (most advantageously shellac) is employed in such joint. It

' is advantageously applied in theform of a -volatile alcoholic solution; and it is also advantageously colored artificially by admixture of coloring matter therewith.

Varnish resin is hard, does not deteriorate with age,

is strongly adherent to metal, is able to. withstand the processing operation, is not affected by the liquids belonging to preserved food gives rise to no substances injurious to health, is tough enough to bedurable, and

can be applied cold. A volatile alcoholic liquid is considered the best solvent for the resin, for one reason because it passes off quickly and entirely without leaving any objectionable residue.

As the resin itself is colorless, or nearly so, the addition ofcoloring matter (say, lamp black) thereto is advantageous in enabling the work people to perceive at once that the necessary coating has been a pplied preparatory to the formation of the interlocking joint.

So far as I am aware, I am the first to employ in an.

interlocked metal joint any plastic filler in the form of a volatile alcoholic solution, and also the first to use an artificially colored plastic filler and to mix coloring matter with a plastic filler of any description for such joint. The invention extends broadly to those fea tures (separately and together), as well as to them (eitheror both) when used with shellac (or a varnish resin in general) as the plastic filler.

The filler is best made thin enough to be applied with a brush and is best applied therewith. By this means the tiller can be applied in an even, thin coating,

whereby there is a saving. of material without loss of efficiency. i

The following is a description of what is considered the best mode of carrying the invention into effect, it

I Specification of Letters Patent.

Patented Oct. 22,1907.

, K being understood that omissions, modifications and and areviews in section of the can cover before and after the application of the joint filler; Figs. 4 and .5 are views'in section, showing the cover applied to the can before and after the formation of the interlocked joint; and Fig fiis a bottom view of a rectangular cover after application of filler to its margin.

The filler is best composed of four pounds of shellac and half a gallon of ordinary commercial wood alcohol with one ounce of lamp black for coloring matter. The 5 shellac is dissolved in the wood alcohol and the lamp black mixed with the solution. With these proportions the filler, on the'one hand, is sufiic'iently fluid to viscous to furnish a coating which (while thin) will 7 effectually fill the joint to be formed after its application. The spindle B, journaled in bearings of the framing A, carries a chuck wheel B (fast on said spindle) and is rotated by a'belt on pulley B. The stamped up cover M is placed on and held by the wheel B so as to be revolved therewith. The workman, afterdipcomposition), applies the latter as a band to the under side of the margin of the cover M. During the operation he may rest the brush on the support A. The rotation of the cover M brings the latters margin in contact with the brush. p I

Owing to the fluidity of the filler, it is brushed on in a thin coating, which is made even and continuous bythe rubbing action of the flexible brush on the travreadily perceptible by the workman.

top of the can which has a flange (asshown in Fig. 4).

This flange and the margin of the cover are then folded I together while the shellac is still plastic in'an interlocked joint (Fig. 5), which is hermetically closed by the interposed filler. Known machines can be emlines indicate the margin of the cover after the ordinary double-seaming machine has commenced to fold the same, in the formation of the interlocked joint.

In use, for preservation of food, the can would be filled with the fish or other food before the application and securing of the cover. The can, with its contents and tight cover, would then be subjected (ordinarily at least) to the customary processing operation.

ping his brush Din the filler (of the before mentioned eling margin. The lamp black in the coating makes it additions can be made indefinitely, so long as the sub- 7 filler to a can cover by means of a brush and a cooperating apparatus, which can advantageously be used ior' moving thecover in contact with said brush; Figs. 2

be applied with a brush,- and, on the other, sufiiciently The coverwith coated margin is applied to the open ,ployed'for forming the joint. In Fig. 4 the dotted -locked joint between the cover and the can, consisting 'in applying varnish resin in a plastic state to one of the inside surfaces of such joint prior. to the joint forming operation, and then completing the joint while the applied varnish resin is plastic and consequently adapted her.- metically to close said joint, substantially as described.

2. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying varnish resin. made plastic by ,volatile solvent to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint wide the applied varnish resin is plastic and consequently described.

1;. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying shellac in a plastic state to one-of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint while-the applied shellac is plastic and consequently adapted hermetically to close said joint, substantially as described. I

' applying shellac'rnade plastic by volatile solvent to one of the inside surfaces of such 'joint prior to the jointad:pted.hermetically to close said joint, substantially as a. The method of closing a can by the aid of'an interloeked joint between the cover .and the can, consisting in forming operation, and then completing the joint while the applied shellac is plastic and consequently adapted hermetically to close said joint, substantially as described.

5. The method of closing a can by the aidof an interlocked joint between the cover and the can, consisting in applyingvarnish'resin in the form of a volatile alcoholic solution to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint while the applied varnish resin is plastic and consequently adapted hermetically to close said joint, substantially as described.-

6. The method of closing a can by the aid of an interlocked joint between the cover and ,the can, consisting in applying shellac in the form pf a volatile alcoholic solution to one of the inside surfaces of such joint prior to the jointforming operation, and then completing the joint While the applied shellac is plastic and consequently adapted hermetically to close said joint, substantially as described.

7. The method of closing a can by the aid of an interlocked joint between the 'cover' and the can,- consisting. in

applying varnish resin artificially colored and in a plasticstate'to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint while the applied varnish resin 'is plastic and consequently adapted hermetically to close said joint, substantially as described.

8. The me hod of closing a can by the aid of an inter I looked joint between the cover and the can, consisting in applying shellac artificialiy colored and in a plastic state to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint \vhile'the applied shellac is plastic and consequently adapted hermetically to close said joint, substantially as described.

9. The 'method of closing a can by the aid of an interlocked'jointbetween the cover and the can, consisting in applying a mixture of varnish resin and coloring matter in a plastic state to one of the inside surfaces of suchjoint prior'to the joint-forming operation, and then C0m pleting the joint while the applied mixture is plastic and consequently adapted hermetically to close said joint, substantially as described.

10. The method of closing a can by the aid of an inter locked'joint between the cover and the can, consisting in applying a mixture of shellac and coloring matter in a plastic state to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint while the applied mixture is plastic and consev quently adapted hermetically to close said joint, substantially as described.

11. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying a mixtuFe of a solution of varnish resin in a volatile liquid and coloring matter to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint while the applied mixture is plastic and consequently adapted hermetically to close said joint, substantially as described.

12. The method of closing a can by the aid of an interlocked joint between the cover and the can, consistingin applying ,a mixture of a solution of shellac in a volatile alcoholic liquid and coloring matter to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint' while the applied'mixture is plastic and consequently adapted hermetically to close said joint, substantially as described.

13. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying a plastic filler in the form of a volatile alcoholic solution to one ofthe inside surfaces of such joint prior to the jo-int -forming operation, and then completing the joint while the applied filler is plastic and consequently adapted hermetically to close said joint, substantially as described.

14. The method of closing a can by'the aid of an inter-.

, locked joint between the cover and the can, consisting in applying an artificially colored plastic filler to one of the inside surfaces of such joint prior to the joint-forming operation, and then completing the joint-while the applied filler is plastic and consequently adapted hermetically to close said joint. substantially as described.

15. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying a plastic filler mixed with coloring matter to one of the inside surfaces of such joint prior to the joint forming operation, and then completing the joint while the applied filler is plastic and consequently adapted hermetically to closesaid joint, substantially as described.-

16. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying a plastic filler in the form of an artificially coiored solution 'in a volatile alcoholic liquid to one of the inside surfaces .of such joint prior to the joint-forming operation, and then completing the joint while the applied filler is plastic and consequently adapted hermetically to close saidjoint, substantially as described.

17.. The method of closing a can by the aid of an interloclied joint between the cover andthe can. consisting in applying a plastic filler in the form of a solution in a vola tile alcoholic liquid mixed with coloring matter to one of the inside surfaces of such joint prior to the jointforming operation, and then completing the joint while the applied .filler is plastic and consequently adapted hermetically'to close said joint, substantially as described.

18. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying varnish resin while fluid enough to be brushed on to one of the inside surfaces of such joint prior to the joint-forming operation, subjecting the so applied resin to the wiping operation of a flexible device, and then completing the joint while the applied varnish resin is plastic and consequently adapted hermetically to close said joint, substantially as described.

19. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying varnish resin in the form of a solution in volatile liquid fluid enough to be brushed on to one of the inside surfaces of such joint prior to the jointforming operation, subjecting the so applied resin to the wiping operation of a flexible device, and then completing the joint while the applied varnish resin is plastic and consequently adapted hermetically to 'close'said joint, substantially as described.

20. The method or closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying shellac while fluid enough to be brushed on to one of the inside surfaces of such joint prior to the joint-formjoint while the applied shellac is plastic and'consequently adapted hermetically to close said joint, substantially asdescribed. a

21. The method of closing a can by the aid of an interlocked joint between the cover and the can, consisting in applying a solution of shellac in ayolatile liquid fluid enough to'be brushed on to one of the inside surfaces of such joint prior to the joint-forming operation, subjecting .the so applied shellac to the wiping operation of a flexible device, and then completing the joint while the applied shellac is plastic and consequently adapted hermetically to close said joint, substantially as' described.

locked joint between the cover and the can, consistlng in applying a solution of shellac in a volatile alcoholic liquidof varnish resin between the inside surfaces of said joint,

substantially as described.

24. A can whereof the cover is united to the can body by means of an interlocked joint closed hermetically by a filler= of varnish resin in the form of the residueleft by evapora-' tion of the volatile solvent from a solution of thevarnish resin therein, said filler being between the inside surfaces ,of

said joint, substantially as described. 7

25. A can whereof the cover is united to the can body by means of an interlocked joint closed hermetically by a filler of shellac between the insidesurfaces of said joint, substantially as described. j

26. A can whereof the cover is united to the can body by 0 means of an interlocked joint closed hermetically by a filler of shellac in theforln of the residue left by evaporation of the volatile solvent from a solution of the shellac therein,

said filler being between the inside surfaces of said joint,

substantially as described.

27. A can whereof the cover is united to the can body by means of an interlocked joint closed hermetically by a filler of varnish resin in the form of the residue left by evaporation of the volatile alcoholic solvent from a solution of the varnish resin therein, said filler being between the inside surfaces of said joint, substantially as described.

28. A can whereof the cover .is united to the can body by means of an interlocked joint closed hermetically by a filler of shellac in the form of the residue left by evaporation of the volatile alcoholic solvent from a solution of the shellac' l 3 0. A can whereof the cover is united to the can body by .said joint, substantially as described.

I surfaces of said joint, substantially as described.

22. The method of closing a can by'the aid of an intermeans of an interlocked joint closed hermetically by a filler of artificially colored shellac between'the' inside surfaces of 31. A canwhereof the cover is united to the can body by means of an interlocked joint closed hermetically by a'filler of varnish resinmixed with coloring matter between the inside,surfaces of said joint, substantially as described.

32. A can whereof the cover is united to the can body by means of an interlocked joint'closed hermetically by a filler of shellac mixed with coloring mattenbetween 33. A can whereof the cover is united to the can body by means of an interlocked joint closed hermetically by a filler of varnish resin mixed' with coloring matter and in the form of the residue leftby evaporation of the volatile solvent from a solution of the varnish'resin therein, said filler being between the inside surfaces of said joint, substantially as described.

34. A can whereof the"cover is united to the' can body by means of an interlocked joint closed hermetically by a filler of shellac mined with coloringmatter and in the form of the residue left by evaporation of the volatile alcoholic solyent from a solution of the shellac therein, said filler being between the. inside surfaces of said joint, substantially as described. v I

35. A can whereof the cover is united to the can body by means of an interlocked joint closed hermetically by a filler in the form of the residue left by evaporation of the volatile alcoholic solvent from a solution of the filling material therein; said filler being between the inside surfaces of said joint, substantially asdescribed.

36. A ,can whereof the cover is united to the can body by means of an'interlocked joint closed hermetically by a filler o'f artificially colored material, said filler being between the inside surfaces of 'said joint, substantially as described. 1

37. A can whereof the cover is united to the can body by.

means of an interlocked joint closed hermetically 'by a filler of material mixed with coloring matter, said filler being between the inside surfaces of saidjoint, substantially as described. 38. A can whereof the cover is united to the can bodyby means of an interlocked joint closed hermetically by a filler evaporation of the volatile alcoholic solvent from a solution of the filling material therein, said filler being between the inside surfaces of said joint, substantially as described.

the inside artificially colored and in the form of the residue leftby V filler being between the inside surfaces of said joint,'substantially as described.

In testimony that I claim the invention above set forth I ailix my signature, in presence of two witnesses. 1 JOHN DIECKMANN..

Witnesses:

J. B. CLAUTICE, M. F. BOYLE. 

